We study the conditions required for χ2→χ+τ±μ∓
decays to yield observable tau flavour violation at the LHC, for cosmologically
interesting values of the neutralino relic density. These condition can be
achieved in the framework of a SU(5) model with a see-saw mechanism that allows
a possible coexistence of a LHC signal a low prediction for radiative LFV
decays.Comment: 7 pages, 5 figures, Prepared for the proceedings of the workshop:
"LC09: e+e− Physics at the TeV Scale and the Dark Matter Connection",
21-24 September 2009, Perugia, Ital